Do a one-minute paper at the end of class. In this exercise, students write down what they consider (a) the main point of the class and (b) the main question they still have as they leave. Collect and read these unsigned papers. You can use some of these questions to begin the next lecture.
This technique keeps the students attentive during class and also helps you gauge where the students are in their learning. Where are they spiritually? What ideas can you focus on next Sabbath to help them in their personal experience with God?
Taken from: trc.virginia.edu/Publications/Teaching_Concerns/Spring_1995/TC_Spring_1995_Students_Thinking.htm.